From: Lee, Chun-Yi
Git-commit: 72e71de15fceb0fd7cdfd8bb35f4f8aa8b0e20b5
Patch-mainline: v3.2
References: bnc#745236
Release-target: openSUSE 12.1
There have new acer notebooks' BIOS provide new WMID_GUID3 and
ACERWMID_EVENT_GUID methods.
Some of machines still keep the old WMID_GUID1 method but more and
more machines were already removed old wmi methods from DSDT.
So, this patch add a new ACER_WMID_v2 interface flag to represent
new acer notebooks, the following is definition:
+ ACER_WMID:
It means this machine only provides WMID_GUID1/2 methods.
+ ACER_WMID_v2:
It means this machine provide new WMID_GUID3 and WMID_EVENT_GUID
methods.
Some ACER_WMID_v2 machines also provide old WMID_GUID1/2 methods,
but we still query/set communication device's state by new
WMID_GUID3 method.
Tested on Acer Travelmate 8572
Tested on Acer Aspire 4739Z
Tested-by: AceLan Kao
Cc: Carlos Corbacho
Cc: Matthew Garrett
Cc: Dmitry Torokhov
Cc: Corentin Chary
Cc: Thomas Renninger
Signed-off-by: Lee, Chun-Yi
Signed-off-by: Matthew Garrett
---
drivers/platform/x86/acer-wmi.c | 416 ++++++++++++++++++++--------------------
1 file changed, 213 insertions(+), 203 deletions(-)
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -190,6 +190,7 @@ enum interface_flags {
ACER_AMW0,
ACER_AMW0_V2,
ACER_WMID,
+ ACER_WMID_v2,
};
#define ACER_DEFAULT_WIRELESS 0
@@ -897,6 +898,177 @@ static acpi_status WMID_set_u32(u32 valu
return WMI_execute_u32(method_id, (u32)value, NULL);
}
+static acpi_status wmid3_get_device_status(u32 *value, u16 device)
+{
+ struct wmid3_gds_return_value return_value;
+ acpi_status status;
+ union acpi_object *obj;
+ struct wmid3_gds_input_param params = {
+ .function_num = 0x1,
+ .hotkey_number = 0x01,
+ .devices = device,
+ };
+ struct acpi_buffer input = {
+ sizeof(struct wmid3_gds_input_param),
+ ¶ms
+ };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+
+ status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ obj = output.pointer;
+
+ if (!obj)
+ return AE_ERROR;
+ else if (obj->type != ACPI_TYPE_BUFFER) {
+ kfree(obj);
+ return AE_ERROR;
+ }
+ if (obj->buffer.length != 8) {
+ pr_warn("Unknown buffer length %d\n", obj->buffer.length);
+ kfree(obj);
+ return AE_ERROR;
+ }
+
+ return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
+ kfree(obj);
+
+ if (return_value.error_code || return_value.ec_return_value)
+ pr_warn("Get 0x%x Device Status failed: 0x%x - 0x%x\n",
+ device,
+ return_value.error_code,
+ return_value.ec_return_value);
+ else
+ *value = !!(return_value.devices & device);
+
+ return status;
+}
+
+static acpi_status wmid_v2_get_u32(u32 *value, u32 cap)
+{
+ u16 device;
+
+ switch (cap) {
+ case ACER_CAP_WIRELESS:
+ device = ACER_WMID3_GDS_WIRELESS;
+ break;
+ case ACER_CAP_BLUETOOTH:
+ device = ACER_WMID3_GDS_BLUETOOTH;
+ break;
+ case ACER_CAP_THREEG:
+ device = ACER_WMID3_GDS_THREEG;
+ break;
+ default:
+ return AE_ERROR;
+ }
+ return wmid3_get_device_status(value, device);
+}
+
+static acpi_status wmid3_set_device_status(u32 value, u16 device)
+{
+ struct wmid3_gds_return_value return_value;
+ acpi_status status;
+ union acpi_object *obj;
+ u16 devices;
+ struct wmid3_gds_input_param params = {
+ .function_num = 0x1,
+ .hotkey_number = 0x01,
+ .devices = ACER_WMID3_GDS_WIRELESS |
+ ACER_WMID3_GDS_THREEG |
+ ACER_WMID3_GDS_WIMAX |
+ ACER_WMID3_GDS_BLUETOOTH,
+ };
+ struct acpi_buffer input = {
+ sizeof(struct wmid3_gds_input_param),
+ ¶ms
+ };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
+
+ status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ obj = output.pointer;
+
+ if (!obj)
+ return AE_ERROR;
+ else if (obj->type != ACPI_TYPE_BUFFER) {
+ kfree(obj);
+ return AE_ERROR;
+ }
+ if (obj->buffer.length != 8) {
+ pr_warning("Unknown buffer length %d\n", obj->buffer.length);
+ kfree(obj);
+ return AE_ERROR;
+ }
+
+ return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
+ kfree(obj);
+
+ if (return_value.error_code || return_value.ec_return_value) {
+ pr_warning("Get Current Device Status failed: "
+ "0x%x - 0x%x\n", return_value.error_code,
+ return_value.ec_return_value);
+ return status;
+ }
+
+ devices = return_value.devices;
+ params.function_num = 0x2;
+ params.hotkey_number = 0x01;
+ params.devices = (value) ? (devices | device) : (devices & ~device);
+
+ status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output2);
+ if (ACPI_FAILURE(status))
+ return status;
+
+ obj = output2.pointer;
+
+ if (!obj)
+ return AE_ERROR;
+ else if (obj->type != ACPI_TYPE_BUFFER) {
+ kfree(obj);
+ return AE_ERROR;
+ }
+ if (obj->buffer.length != 4) {
+ pr_warning("Unknown buffer length %d\n", obj->buffer.length);
+ kfree(obj);
+ return AE_ERROR;
+ }
+
+ return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
+ kfree(obj);
+
+ if (return_value.error_code || return_value.ec_return_value)
+ pr_warning("Set Device Status failed: "
+ "0x%x - 0x%x\n", return_value.error_code,
+ return_value.ec_return_value);
+
+ return status;
+}
+
+static acpi_status wmid_v2_set_u32(u32 value, u32 cap)
+{
+ u16 device;
+
+ switch (cap) {
+ case ACER_CAP_WIRELESS:
+ device = ACER_WMID3_GDS_WIRELESS;
+ break;
+ case ACER_CAP_BLUETOOTH:
+ device = ACER_WMID3_GDS_BLUETOOTH;
+ break;
+ case ACER_CAP_THREEG:
+ device = ACER_WMID3_GDS_THREEG;
+ break;
+ default:
+ return AE_ERROR;
+ }
+ return wmid3_set_device_status(value, device);
+}
+
static void type_aa_dmi_decode(const struct dmi_header *header, void *dummy)
{
struct hotkey_function_type_aa *type_aa;
@@ -942,17 +1114,11 @@ static acpi_status WMID_set_capabilities
return AE_ERROR;
}
- dmi_walk(type_aa_dmi_decode, NULL);
- if (!has_type_aa) {
- interface->capability |= ACER_CAP_WIRELESS;
- if (devices & 0x40)
- interface->capability |= ACER_CAP_THREEG;
- if (devices & 0x10)
- interface->capability |= ACER_CAP_BLUETOOTH;
- }
-
- /* WMID always provides brightness methods */
- interface->capability |= ACER_CAP_BRIGHTNESS;
+ interface->capability |= ACER_CAP_WIRELESS;
+ if (devices & 0x40)
+ interface->capability |= ACER_CAP_THREEG;
+ if (devices & 0x10)
+ interface->capability |= ACER_CAP_BLUETOOTH;
if (!(devices & 0x20))
max_brightness = 0x9;
@@ -965,6 +1131,10 @@ static struct wmi_interface wmid_interfa
.type = ACER_WMID,
};
+static struct wmi_interface wmid_v2_interface = {
+ .type = ACER_WMID_v2,
+};
+
/*
* Generic Device (interface-independent)
*/
@@ -985,6 +1155,14 @@ static acpi_status get_u32(u32 *value, u
case ACER_WMID:
status = WMID_get_u32(value, cap, interface);
break;
+ case ACER_WMID_v2:
+ if (cap & (ACER_CAP_WIRELESS |
+ ACER_CAP_BLUETOOTH |
+ ACER_CAP_THREEG))
+ status = wmid_v2_get_u32(value, cap);
+ else if (wmi_has_guid(WMID_GUID2))
+ status = WMID_get_u32(value, cap, interface);
+ break;
}
return status;
@@ -1018,6 +1196,13 @@ static acpi_status set_u32(u32 value, u3
}
case ACER_WMID:
return WMID_set_u32(value, cap, interface);
+ case ACER_WMID_v2:
+ if (cap & (ACER_CAP_WIRELESS |
+ ACER_CAP_BLUETOOTH |
+ ACER_CAP_THREEG))
+ return wmid_v2_set_u32(value, cap);
+ else if (wmi_has_guid(WMID_GUID2))
+ return WMID_set_u32(value, cap, interface);
default:
return AE_BAD_PARAMETER;
}
@@ -1124,186 +1309,6 @@ static void acer_backlight_exit(void)
backlight_device_unregister(acer_backlight_device);
}
-static acpi_status wmid3_get_device_status(u32 *value, u16 device)
-{
- struct wmid3_gds_return_value return_value;
- acpi_status status;
- union acpi_object *obj;
- struct wmid3_gds_input_param params = {
- .function_num = 0x1,
- .hotkey_number = 0x01,
- .devices = device,
- };
- struct acpi_buffer input = {
- sizeof(struct wmid3_gds_input_param),
- ¶ms
- };
- struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
-
- status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
- if (ACPI_FAILURE(status))
- return status;
-
- obj = output.pointer;
-
- if (!obj)
- return AE_ERROR;
- else if (obj->type != ACPI_TYPE_BUFFER) {
- kfree(obj);
- return AE_ERROR;
- }
- if (obj->buffer.length != 8) {
- pr_warn("Unknown buffer length %d\n", obj->buffer.length);
- kfree(obj);
- return AE_ERROR;
- }
-
- return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
- kfree(obj);
-
- if (return_value.error_code || return_value.ec_return_value)
- pr_warn("Get Device Status failed: 0x%x - 0x%x\n",
- return_value.error_code,
- return_value.ec_return_value);
- else
- *value = !!(return_value.devices & device);
-
- return status;
-}
-
-static acpi_status get_device_status(u32 *value, u32 cap)
-{
- if (wmi_has_guid(WMID_GUID3)) {
- u16 device;
-
- switch (cap) {
- case ACER_CAP_WIRELESS:
- device = ACER_WMID3_GDS_WIRELESS;
- break;
- case ACER_CAP_BLUETOOTH:
- device = ACER_WMID3_GDS_BLUETOOTH;
- break;
- case ACER_CAP_THREEG:
- device = ACER_WMID3_GDS_THREEG;
- break;
- default:
- return AE_ERROR;
- }
- return wmid3_get_device_status(value, device);
-
- } else {
- return get_u32(value, cap);
- }
-}
-
-static acpi_status wmid3_set_device_status(u32 value, u16 device)
-{
- struct wmid3_gds_return_value return_value;
- acpi_status status;
- union acpi_object *obj;
- u16 devices;
- struct wmid3_gds_input_param params = {
- .function_num = 0x1,
- .hotkey_number = 0x01,
- .devices = ACER_WMID3_GDS_WIRELESS |
- ACER_WMID3_GDS_THREEG |
- ACER_WMID3_GDS_WIMAX |
- ACER_WMID3_GDS_BLUETOOTH,
- };
- struct acpi_buffer input = {
- sizeof(struct wmid3_gds_input_param),
- ¶ms
- };
- struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
- struct acpi_buffer output2 = { ACPI_ALLOCATE_BUFFER, NULL };
-
- status = wmi_evaluate_method(WMID_GUID3, 0, 0x2, &input, &output);
- if (ACPI_FAILURE(status))
- return status;
-
- obj = output.pointer;
-
- if (!obj)
- return AE_ERROR;
- else if (obj->type != ACPI_TYPE_BUFFER) {
- kfree(obj);
- return AE_ERROR;
- }
- if (obj->buffer.length != 8) {
- pr_warning("Unknown buffer length %d\n", obj->buffer.length);
- kfree(obj);
- return AE_ERROR;
- }
-
- return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
- kfree(obj);
-
- if (return_value.error_code || return_value.ec_return_value) {
- pr_warning("Get Current Device Status failed: "
- "0x%x - 0x%x\n", return_value.error_code,
- return_value.ec_return_value);
- return status;
- }
-
- devices = return_value.devices;
- params.function_num = 0x2;
- params.hotkey_number = 0x01;
- params.devices = (value) ? (devices | device) : (devices & ~device);
-
- status = wmi_evaluate_method(WMID_GUID3, 0, 0x1, &input, &output2);
- if (ACPI_FAILURE(status))
- return status;
-
- obj = output2.pointer;
-
- if (!obj)
- return AE_ERROR;
- else if (obj->type != ACPI_TYPE_BUFFER) {
- kfree(obj);
- return AE_ERROR;
- }
- if (obj->buffer.length != 4) {
- pr_warning("Unknown buffer length %d\n", obj->buffer.length);
- kfree(obj);
- return AE_ERROR;
- }
-
- return_value = *((struct wmid3_gds_return_value *)obj->buffer.pointer);
- kfree(obj);
-
- if (return_value.error_code || return_value.ec_return_value)
- pr_warning("Set Device Status failed: "
- "0x%x - 0x%x\n", return_value.error_code,
- return_value.ec_return_value);
-
- return status;
-}
-
-static acpi_status set_device_status(u32 value, u32 cap)
-{
- if (wmi_has_guid(WMID_GUID3)) {
- u16 device;
-
- switch (cap) {
- case ACER_CAP_WIRELESS:
- device = ACER_WMID3_GDS_WIRELESS;
- break;
- case ACER_CAP_BLUETOOTH:
- device = ACER_WMID3_GDS_BLUETOOTH;
- break;
- case ACER_CAP_THREEG:
- device = ACER_WMID3_GDS_THREEG;
- break;
- default:
- return AE_ERROR;
- }
- return wmid3_set_device_status(value, device);
-
- } else {
- return set_u32(value, cap);
- }
-}
-
/*
* Rfkill devices
*/
@@ -1330,8 +1335,7 @@ static void acer_rfkill_update(struct wo
}
if (has_cap(ACER_CAP_THREEG) && wmi_has_guid(WMID_GUID3)) {
- status = wmid3_get_device_status(&state,
- ACER_WMID3_GDS_THREEG);
+ status = get_u32(&state, ACER_WMID3_GDS_THREEG);
if (ACPI_SUCCESS(status))
rfkill_set_sw_state(threeg_rfkill, !state);
}
@@ -1345,7 +1349,7 @@ static int acer_rfkill_set(void *data, b
u32 cap = (unsigned long)data;
if (rfkill_inited) {
- status = set_device_status(!blocked, cap);
+ status = set_u32(!blocked, cap);
if (ACPI_FAILURE(status))
return -ENODEV;
}
@@ -1372,7 +1376,7 @@ static struct rfkill *acer_rfkill_regist
if (!rfkill_dev)
return ERR_PTR(-ENOMEM);
- status = get_device_status(&state, cap);
+ status = get_u32(&state, cap);
err = rfkill_register(rfkill_dev);
if (err) {
@@ -1457,11 +1461,7 @@ static ssize_t show_bool_threeg(struct d
pr_info("This threeg sysfs will be removed in 2012"
" - used by: %s\n", current->comm);
- if (wmi_has_guid(WMID_GUID3))
- status = wmid3_get_device_status(&result,
- ACER_WMID3_GDS_THREEG);
- else
- status = get_u32(&result, ACER_CAP_THREEG);
+ status = get_u32(&result, ACER_CAP_THREEG);
if (ACPI_SUCCESS(status))
return sprintf(buf, "%u\n", result);
return sprintf(buf, "Read error\n");
@@ -1493,6 +1493,8 @@ static ssize_t show_interface(struct dev
return sprintf(buf, "AMW0 v2\n");
case ACER_WMID:
return sprintf(buf, "WMID\n");
+ case ACER_WMID_v2:
+ return sprintf(buf, "WMID v2\n");
default:
return sprintf(buf, "Error!\n");
}
@@ -1912,12 +1914,20 @@ static int __init acer_wmi_init(void)
if (!wmi_has_guid(AMW0_GUID1) && wmi_has_guid(WMID_GUID1))
interface = &wmid_interface;
+ if (wmi_has_guid(WMID_GUID3))
+ interface = &wmid_v2_interface;
+
+ if (interface)
+ dmi_walk(type_aa_dmi_decode, NULL);
+
if (wmi_has_guid(WMID_GUID2) && interface) {
- if (ACPI_FAILURE(WMID_set_capabilities())) {
+ if (!has_type_aa && ACPI_FAILURE(WMID_set_capabilities())) {
pr_err("Unable to detect available WMID devices\n");
return -ENODEV;
}
- } else if (!wmi_has_guid(WMID_GUID2) && interface) {
+ /* WMID always provides brightness methods */
+ interface->capability |= ACER_CAP_BRIGHTNESS;
+ } else if (!wmi_has_guid(WMID_GUID2) && interface && !has_type_aa) {
pr_err("No WMID device detection method found\n");
return -ENODEV;
}
@@ -1941,7 +1951,7 @@ static int __init acer_wmi_init(void)
set_quirks();
- if (acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
+ if (acpi_video_backlight_support()) {
interface->capability &= ~ACER_CAP_BRIGHTNESS;
pr_info("Brightness must be controlled by "
"generic video driver\n");
--
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Lee, Chun-Yi